A driving apparatus for a display panel having a plurality of row electrodes and a plurality of column electrodes intersecting the row electrodes, for generating a drive pulse to be applied to each of the electrodes. The driving apparatus includes a DC power supply for generating a DC voltage and having a positive terminal and a negative terminal one of which is applied with a reference potential, a coil having one end connected to the other terminal of the DC power supply, and a switching arrangement for alternately making a connection and disconnection between the one end of the coil and the other terminal of the DC power supply. At the time the alternate switching is performed, a potential change appearing on the other end of the coil is used as the drive pulse.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A driving apparatus for a display panel having a plurality of row electrodes and a plurality of column electrodes intersecting said row electrodes, for generating a drive pulse to be applied to each of said electrodes, comprising: a DC power supply for generating a DC voltage and having a positive terminal and a negative terminal, one of said positive terminal and negative terminal applied with a reference potential; a coil having a first end connected to the other terminal of said DC power supply and switching means for alternately making a connection and disconnection between said first end of said coil and said other terminal of said DC power supply, wherein said drive pulse is generated on a second end of said coil by connecting said one terminal of said DC power supply to said first end of said coil by said switching means during a period equivalent to one resonance period determined by capacitive elements of said coil and said display panel.
2. The driving apparatus according to claim 1 , further comprising: peak-voltage detection means for detecting a peak voltage value of said drive pulse; and stabilizing means for maintaining a peak value of said drive pulse at a constant value in accordance with said peak voltage value.
3. The driving apparatus according to claim 1 , wherein said drive pulse is a sustain pulse applied to said row electrodes.
4. The driving apparatus according to claim 1 , wherein said drive pulse is a pixel data pulse applied to an associated one of said column electrodes.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 1, 2000
November 12, 2002
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